Typewriting-machine



G. A. SEiB.

TYPEWRiTING MACHINE. AFPLSCATION HLED SEPT. 18. 1916.

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WITNEEJEEE iNVENTElR j r115 ATTORNEY UNITED mm mm orr cag GEORGE A. seiner inron, NEwYonK, Assienoie To nai/iriveroiv rrrnwnrrnn em.

PAINSLOF rnron, NEW'YOEK, a oonroiaar oiv or New YORK. I

TYPEWRITINGJVIACHINE.

T 0 all w ham 2'5 may concern: I

Be it known that 1,- Gnonen A. SE13, citizen oi'the United States, and residentof Ilion, in the county of l-lerkimer and State of New York, have invented certain new and useful Improvements in Typewriting-Machines, of which the following is a specification. 1 v V Broadly stated my present invention relates to locking devices for screwsor bolts and its general object is tofprovide improved devices of the character specified.

The improved screwlocking devices, however, were especially designed for use in typewriting machines in connection with the adjustable screws that regulate the tension of the compression or restoring springs for the key levers, and the particularob j ect ofthe'invention is to provide comparatively simple and inexpensive but effective devices for affording individual adjustment and settting or locking of: the said screws which are in effect abutments with which the ends of the compression springs cooperate. Another object of the invention is to proviee an improved method of manufacturing screw looking or holding devices.

To the above and other ends my present invention consists in the features of construction, combinations of devices and arrangements of parts hereinafter described and particularly pointed out in the claims.

in the accompanying drawing,

Figure 1 is a fragmentary front to rear vertical sectional view of the lower portion of a front-strike Remington typewriting machine'towhicli thepreferred form or" my invention is shown as applied.

F 2 is a fragmentary bottom plan view of my improved screw locking devices.'

Fig. 3 is an enlarged transverse sectional view taken on a plane indicated by the dotted line a x in Fig. 2.

Fig. 4 is a view corresponding to Fig. 3 but showing a preliminary stage in the method of carrying out my invention.

As appears fromFig. 1, the base 1 of the main frame of the said Remington typewriting machine has arranged within it a set of key levers 2 which are fulcrumed at 3 in the rear of the base, the key levers each being provided with a key cap .or button 4;, and being connected in the ordinary way by devices comprising links 5 with the voperation.

Specification of Letters Patent." Patentgd M y 17 192 Application filed. September 18, 1916. Serial No. 120,853. i 1 i not herein disclosed. As is usual, each key lever is provided with an individual restoring spring which. assists to restore; it and the connected parts 'to normal position after Inthe present, instance therestoringjsprings 6 (Figsi 1 and 2) are coiled compression springs vertically arranged below the key levers, the upper .end of each spring fitting. loosely around thelug or tooth 7 projecting downward from the key lever slightly forward of its fulcrum. The lower portion of the spring is housed in a tapped 'hole or openingindioated at 8 in a cross bar 9 suitably secured in the sides of the base, and the bottom end of the spring rests on and cooperates with an adjustable-abutment in the form of a threaded member or headless screw lO- that is threaded into the hole 8 from the bottoml It will be understood that the tension or pressure exerted by the spring 6 on its key lever 2 maybe varied and regulated by ad justing the screw 10 in the bar 9'and that in order that the action ofthe spring after such adjustment may be constant it is necessary to set,'fix or lock the screw 10. My present invention is more especially con cerned with improved locking or holding means for this purpose, which" means is at once simple and highly efficient.

The preferred method ofcarrying out my invention will now bBI'ClBSOIlbGCL: It will be noted that the bar 9 in which :the screws 10 are mounted is provided at its under side with a shoulder 9 thatseparates tlie'front portion from the narrower rear portion of the bar. This bar, as has been stated, is detachably secured in the base. The. securing may be done by pairs of screws 9 at the 7 sides of the base, the end portions of the bar being provided with upwardly extendingfianges, each flange receiving the upper one of the associate pair of screws 9*. Prior to being mountedin the base the bar is turned over so that its bottom side is uppermost. A'thin metallic fillet or filling strip 11 (Fig. 4) is then' arranged on its rear portion back of the shoulder and over this is placed a somewhat thicker; locking strip 12 which, as? appears most clearly in Fig. 2, is dividedby a series of transverse kerfs or cuts 13 into a set of parallel tongues 14. These tongues correspond in number to the number ofkey' levers fandkey lever '12 will be designated as 8 restoring springs and are joined by the uncut connecting portion 15 of the strip or bar 12. This bar is of steel and the tongues 14L I 16 which are threaded into openings in the bar 9 that preferably extend through the thickness of the bar. There are a sufiicient numberof these screws 16 to securely hold the bar 12 and the filling strip 11 in place. Thus secured, the holes 8 are drilled and tapped, the holes passing not only through the bar 9 but through the tongues 14 and the filling strip 11. The tapping is done first through the tongues 14, next through the filling strip, and then through the body of the bar 9. The thickness of the filling strip may vary but care must be taken that in no case shall it be equal in thickness to the pitch of the screw 10. Preferably the thickness of the filling strip corresponds to about half of the pitch of the screw 10 and consequently of the tap employed. The operations described having been performed, the screws16 are unscrewed and the filling strip 11 removed, whereupon the screws 16 are screwed in again, thus securely fixing the tongued strip 12 directly to the supporting bar 9. When so secured the tongued strip 12 lies flat against the bar 9 back of the shoulder so that the threaded hole 8 is continuous, but it will be understood that the threads in the parts 12 and 9 are not continuous, owing to the removal of the filling strip, the thickness whereof, as has been stated, is preferably equal to about half the pitch of the threads in the hole 8. For convenience of description, that portion o-f the hole 8 that is in the tongue 14 ofthe strip Normally the axes of the threaded holes 8 and 8 will coincide with each other The result of the construction and arrangement will be that if now a screw 10 be inserted in the hole 8 and screwed in, the relationship between the tongue 14: and the bar 9 will not. be affected at first; When, however, the inner end of the screw reaches the bar 9 it will not immediately enter the'hole 8 since the con-' tinuity of'the threads has been interrupted, and it must be turned some distance (half a turn, for example) before it can properly engage with the thread in the hole 8. During this. rotary movement of the] screw .10 it will not advance longitudinally and. con.- sequently the tongue 14 (as shown. in Fig. 3) will be forced away from the face of the bar 9 against which it is secured a distance about equal to the thickness of. the fillet, the resilient quality of'the tongue enabling it to bend from its root where it joins the connecting base or body 15 of the bar 12.

This bending'or yielding movement of the tongue 14 will continueuntil the screw 10 the thickness of the fillet 11 and also that as a result of this bending or yielding movement of'thetongue it will grip the screw, exerting a locking. or restrictive action on it so as to prevent accidental turning or dis.- placement of the screw after it has been once properly adjusted or set. At this time the axes of the holes 8 and 8 will be at an angle one to theother. It will therefore be understood that the action of one of the screws 10 on its associate tongue 1a does not affect any other tongue. In other words, the series of tongues, though forming part of a single part or piece 12, operate independently of each other and afford individual adjustment and setting of their associate screws so that the single piece 12 enables me in effect to obtain the results which would have to be obtained otherwise by the employment of separate washers or nuts, corresponding in number to the tongues formed in the strip 12. It will also be observed that the. location of the bar 9 in the machine is such that after it has once been secured in place the screws 10 may readily be adjusted after the key actions have been assembled and the springs 6 arranged in the holes 8 and in con cnt instance being connected to the key levers of the typewriting machine and operating restore said key levers after actuation that combined with these screws or members is a single device for locking said screws or members in set positions while affording lndividual adjustments thereof whereby the tension of the springs may be controlled and varied; that the locking device in the'present instance comprises a bar provided with a plurality of individual resilient, yieldable or spring tongues arranged parallel with each other and having tapped openings through which the screws or tension controlling members are threaded before said members enter the threaded openingsin the supporting bar; that as a'result of breaking the continuity of the threads in the tongues and the supporting bar, the tongues and the supporting bar. are relatively yieldable through the action of the threaded memhers or screws, the effect being to lock the screws against accidental turning movement while afiording individual adjustment of said screws; that the method of providing locking strip and the support, then drilling and tapping a hole through the three parts, then in removing the fillet strip andre-securing the locking screw to the support; that the thickness of the fillet strip must not correspond to the pitch of the threads since it is desired to interrupt or break the continuity of the threads by removing the fillet strip; that the axes of the threaded openin'g in the tongue and ofthe corresponding opening in the support of bar are normally coincident; that the effect of threading the member or screw into the tongue is to cause said screw to operate automatically as it is turned to change the relationship of said axes, the axis of the hole in the tongue being thrown out so that it is at an angle to the axis of the hole or threaded opening in the support or bar; and that as a result of my invention 1 have provided an efficient and simple means for locking a plurality of threaded members or bolts on a common support without interfering with their separateadjustability and also a simplified method by which this resulting means is produced. f I

While my invention has been designed primarily for, use in typewriting machines and the preferred form of it is embodied in such a machine, nevertheless applications of it to othermachines and in other forms will readily suggest themselves, and itwill of course be understood that various constructional changes may be -made without departing from my said invention.

Whatl claim as new and by Letters Patent, is: 7 v 1 i l. The combination with a plurality of threaded members and a support therefor, ofa single device for locking saidmembers in set positions while aflording-individual desire to secure adjustments of said members to any desired extent without ,at the same time disturbing the locking engagement of said device with the remaining threaded members, and means for securing said locking device; the aforesaid individual: adjustments of saidthreaded members being also accomplishable without disturbing said securing means. i

2. The combination with a plurality of springs, a plurality of adjustable tension' fally to change the relationship of said axes elements, members one for each spring for varying the effect of said springs, a support for said members, and a single device forholding said members in set positions, said members being individually adjustable to any desired extent to vary-said set positions. I Y v 4. The combination of a set of key levers, coiled springsconnected with said key levers, adjustable abutments cooperative with said springs, asupport for said abutments, and a single device for holding? said abutments in adjusted positions, said abutments being each individually adjustable while said device is effective on the others. 5.'In a typewriting machine, the combination of a set of keylevers, coiled restoring springs connected to said key levers, abar containing holes in which said springs are partly housed, screws threaded into said holes and cooperative with said springs-to afl'ord compression thereof and to vary such compression, and a locking bar provided with individual spring tongues through which said screws are also threaded, said tongues cooperating with said screws tohold them in adjusted positions. a 6. The combination of a pluralityjof threaded members, a supporting bar in which said threaded members are disposed, and a'locking barsecured to said first recited bar and provided with individual i tongues cooperating with said threaded anembers.

7 The combination of a support containing a threaded opening, a resilient part contaming a threaded opening in register with the threaded opening in said support vso that the axes of the two threaded openings are normally coincident, the continuity-"of the threads, however,in the two threaded openings being interrupted, and a threaded member that is received inbothsaid support and said resilient part, the turning, of said threaded member being effective automatic-11 10 so that they are angularly disposed. 8. The combination of a support containing a series of threaded openings, threaded members engaging in said openings, and a locking bar provided with a series of resilient tongues, each tongue formed with ;a threaded opening inwhich one ofsaid threaded members engages. r

9. The combination of a support containing a series of threaded openings, screws engaging in said openings, and a locking bar provided with a series of parallel independently yieldable tongues, each tongue formedwith a threaded opening in which one of said Screws engages. I s

10. The combination of a support containing a series of threaded openings, threaded members engaging in said openings, and a series of parallel independently yieldable tongues, each tongue formed with a threaded opening in register with one of the threaded openings in said support, the continuityof the threads, however, in each pair of registering threaded openings being interrupted, each threaded member also engaging in one of said tongues.

11. The combination of a threaded memher, a support into which" said member is threaded, and a resilient tongue in which said member is also threaded, the axes of the threaded opening in said support and the threaded opening in said tongue being normally coincident and the threads in said parts being discontinuous, the eftomatically throw the aXes of said threaded openings out of register,

13. The method of providing for looking a threaded member in its support which consists in-securing to said support a fillet or strip and a locking strip, the fillet being interposed between the locking strip and the support, then drilling a continuous hole through the three parts, then tapping the hole, then in removing the fillet and re-securing the locking strip to the support,

14:. The method of providing for looking a threaded member in its support which consists in securing tosaid support a filling strip and 'a locking strip, the filling strip being interposed between the locking strip and the support, then drilling and tapping 'a hole through the three parts, then in removing the filling strip and re-securing the locking strip to the support, the-filling strip having a thickness less than the pitch of the threads of the tap. a

15. The method of providing for locking a'series of independently adjustable threaded members in their support whiehconsists in securing to said support a fillet and a locking strip, the locking strip being formed with a series of parallel tongues, the fillet being interposed between the locking strip and the support, then drilling and tapping ings in each tongue in register withone of the tapped openings in the support.

16. Thevmethod of providing for looking a series of independently adjustable threaded members in their support which consists in first securing to said support 'a locking strip and an interposed fillet, the locking strip being formed with aseries of parallel tongues, then drilling and tapping a series of holes, each hole passing through one of said tongues and through the fillet and then into the support, and then in removing the fillet and re-securing the locking strip to the support with one of the tapped openings in each tongue in register with one of the tapped openings in the support,-the thickness of the fillet preferably corresponding to about half the pitch of the thread with. which it is tapped.

17. The method of providing for looking a threaded member in its support which consists in first securing to said support a looking strip and an interposed filling'strip, then drilling and tapping a hole through the two strips and the support, and finally in removing the filling strip and re-securing the locking strip, the filling strip havinga thickness differing from the pitch of the threads of the tap. f 18. In a typewriter, pivoted keylevers, tension springs and adjusting screws therefor, and a'pla'te with'a plurality of'sprin'g tongues, one for engaging each of'the adjusting screws, to.hold-said'screws in any rotatableposition.

Signed at Then, in the county of Herkimer and State of New York, this 15th day of September, A. D. 1916.

, GEORGE A. SEIB.

Witnesses:

MARY G. GLnAsoN,

CLARE-Non M. SLAWSON. 

